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Researchers: Tour cyclists have hearts 40 percent bigger than normal

Updated: September 3, 2007, 1:10 PM ET
Associated Press

VIENNA, Austria -- Riding the grueling Tour de France bike race takes strength, stamina -- and perhaps a heart nearly 40 percent bigger than normal.

Researchers who examined the hearts of former Tour bikers found that the athletes' hearts were from 20 to 40 percent larger than average, said Dr. Francois Carre of the Centre Hospitalier Universitaire de Rennes, France, speaking at a meeting of the European Society of Cardiology.

The difference is attributable largely to rigorous ...

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